Ключевые слова: 12600005, 3035 years, 30s adult, analyzing, bending down, biotechnology, caucasian, chemicals, concentration, container, examining, experiment, expertise, indoors, laboratory, laboratory equipment, laboratory technician, leaning over, man, medical research, midadult man, mixing, one person only, petri dish, pipette, precision, protective clothing, protective glove, protective goggles, research, research facility, researcher, science, scientific equipment, side view, skill, stack, technician, testing, workbench, working,